1.0.0-beta.19

Breaking

• change get-environment-variables and get-environment-variable returns nil and undefined in the browser
• true, false, and NaN are no longer parser constants #292
• get rid of node polyfills from output files
• eval use interaction-environment stead of current-environment by default
• remove support for string argument to read #327
• make null falsy value #330
• remove nil parser constant #332
• replace undefined with #void, and null with #null
• characters are again unboxed into strings by JavaScript code #329
• code that throw exception now return exit code 1
• change order of arguments in take
• (type #void) (JavaScript undefined) is now void

Features

• add vector-for-each and vector-copy! function from R7RS
• add string-for-each, string-downcase, and string-upcase from R7RS
• add typecheck-number function
• add char-foldcase and string-foldcase functions
• add list-set! and nth-pair functions
• add SRFI-61, SRFI-139, and SRFI-210
• add continuations? function
• add iterator->array function
• add immutable strings as in R7RS spec #285
• add R7RS char<...>? and string<...>? functions #298
• improve syntax-rule exception message (appending macro code)
• update log to accept two arguments #301
• allow to use data-bootstrap attribute on script tags
• make atan work for complex numbers
• save error logs in home dir
• add timestamp to error logs
• make +inf.0 and -inf.0 parser constants
• add zip procedure (inspired by Lodash)
• add with-input-from-string and read-all #327
• add #!fold-case and #!no-fold-case directives #342
• add drop procedure
• allow to use unquoted symbols in --> to get the function
• add regex procedure (rename from %r used in bootstrap.scm)
• support unterminated strings in REPL #280
• expose parser and lexer instance from syntax extensions #308

Bugfix

• fix let-values to allow binding to list #281
• fix wrong strings in string-fill!
• fix string-set! to mutate the string and work on any expression
• fix tokenizing regex that ends with hash
• fix bookmark on SRFI-210 document #287
• fix syntax-rules in macro define-value #290
• fix indentation of let-values
• various fixes to syntax-rules
• fix procedure? to return true for continuations
• fix lips --help screen
• fix cond-expand to skip not-matched symbols
• fix shadowing syntax-rules identifiers with let #291
• fix nested syntax rules with symbols after nested ellipsis
• fix Dark Mode colors and scrolling of the page when using Bookmarklet on English Wikipedia
• remove dependencies on cond from --> macro so you can use use --> inside cond
• fix handling of recursive flatten syntax-rules macro #304
• fix syntax-rules macro that manipulate code (see tests/syntax.scm and undswap macro)
• fix (read) in the Web REPL
• fix Node REPL with npm install #305
• fix formatting syntax-rules
• improve floating point representation and parsing
• fix bookmark when hovering over boolean values
• fix quoted cycle in REPL #313
• fix set-repr! on base class #314
• fix repr of delay expressions #315
• fix try..catch #317
• fix handling ^ and $ syntax extension #318
• fix mixed values in let*-values #322
• fix do macro #324
• fix string->number that leads to NaN #326
• fix unintentional unboxing in iterator->array #328
• fix replace with async lambda #319
• fix values without arguments #331
• improve working of REPL in Emacs
• fix (expt +i +i)
• fix let with duplicated variables #335
• fix escape ellipsis in syntax-rules #334
• fix parsing inexact complex without real part and inexact->exact procedure #340
• fix Petrofsky let #341
• fix repr of cycles
• fix parsing regex that have escaped open bracket
• fix parsing quotation without data
• fix reading syntax-extensions from input ports
• fix parsing syntax-extensions that start with #f or #t #343
• fix repr of curried function (output of curry)